Articles | Volume 16, issue 24
https://doi.org/10.5194/bg-16-4805-2019
https://doi.org/10.5194/bg-16-4805-2019
Technical note
 | 
17 Dec 2019
Technical note |  | 17 Dec 2019

Technical note: The silicon isotopic composition of choanoflagellates: implications for a mechanistic understanding of isotopic fractionation during biosilicification

Alan Marron, Lucie Cassarino, Jade Hatton, Paul Curnow, and Katharine R. Hendry

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Cited articles

Adl, S. M., Bass, D., Lane, C. E., Lukes, J., Schoch, C. L., Smirnov, A., Agatha, S., Berney, C., Brown, M. W., Burki, F., Cardenas, P., Cepicka, I., Chistyakova, L., del Campo, J., Dunthorn, M., Edvardsen, B., Eglit, Y., Guillou, L., Hampl, V., Heiss, A. A., Hoppenrath, M., James, T. Y., Karnkowska, A., Karpov, S., Kim, E., Kolisko, M., Kudryavtsev, A., Lahr, D. J. G., Lara, E., Le Gall, L., Lynn, D. H., Mann, D. G., Massana, R., Mitchell, E. A. D., Morrow, C., Park, J. S., Pawlowski, J. W., Powell, M. J., Richter, D. J., Rueckert, S., Shadwick, L., Shimano, S., Spiegel, F. W., Torruella, G., Youssef, N., Zlatogursky, V., and Zhang, Q.: Revisions to the Classification, Nomenclature, and Diversity of Eukaryotes, J. Eukaryot. Microbiol., 66, 4–119, https://doi.org/10.1111/jeu.12691, 2019. a
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Cassarino, L., Coath, C. D., Xavier, J. R., and Hendry, K. R.: Silicon isotopes of deep sea sponges: new insights into biomineralisation and skeletal structure, Biogeosciences, 15, 6959–6977, https://doi.org/10.5194/bg-15-6959-2018, 2018. a, b, c
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Short summary
Isotopic signatures of silica fossils can be used as archives of past oceanic silicon cycling, which is linked to marine carbon uptake. However, the biochemistry that lies behind such chemical fingerprints remains poorly understood. We present the first measurements of silicon isotopes in a group of protists closely related to animals, choanoflagellates. Our results highlight a taxonomic basis to silica isotope signatures, possibly via a shared transport pathway in choanoflagellates and animals.
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